FLIR CM174 IGM™-Enabled Clamp Meter

Overview

The FLIR CM174 is a professional-grade clamp meter engineered for electrical maintenance, commissioning, and troubleshooting in industrial, commercial, and utility environments. Unlike conventional clamp meters that rely solely on contact-based current measurement, the CM174 integrates FLIR’s proprietary IGM™ (Infrared Guided Measurement) technology—a fusion of thermal imaging and precision electrical metrology. At its core, the device embeds a FLIR Lepton® microthermal sensor (uncooled VOx microbolometer) alongside a high-accuracy AC/DC current sensing jaw, enabling simultaneous non-contact thermal localization and quantitative electrical verification. This dual-sensing architecture allows technicians to detect anomalous thermal signatures—such as loose connections, overloaded conductors, or failing breakers—at safe working distances (per NFPA 70E Category 2 requirements), then immediately validate root cause with true-RMS current, voltage, resistance, continuity, and temperature readings—all without switching instruments or repositioning.

Key Features

• IGM™ Technology: Real-time overlay of thermal imagery onto the LCD display, with crosshair-guided targeting to pinpoint exact locations of thermal anomalies prior to electrical measurement.
• Lepton® Thermal Sensor: 80 × 60 pixel resolution, 50 mK thermal sensitivity, and a 57° horizontal field of view optimized for panel-level diagnostics.
• Clamp Jaw Design: Slim-profile 35 mm jaw with integrated LED worklight for low-illumination enclosures and confined spaces (e.g., MCC buckets, transformer vaults).
• Electrical Measurement Capabilities: True-RMS AC/DC current up to 600 A (standard), expandable to 3000 A using optional FLIR FlexiClamp™ accessory; AC/DC voltage (1000 V CAT III / 600 V CAT IV); resistance (40 MΩ); capacitance (10,000 µF); frequency (10 Hz–1 kHz); inrush current capture; low-impedance voltage mode (LoZ) for ghost voltage rejection.
• Smart Diagnostics: Auto-ranging with manual override; diode test with forward voltage drop and continuity beeper; min/max/avg/delta logging with timestamped events.
• Durability & Compliance: IP54-rated enclosure; drop-tested to 1 m; certified to IEC 61010-1:2011 (CAT III 1000 V / CAT IV 600 V); meets UL 61010-1 and CSA C22.2 No. 61010-1 safety standards.

Sample Compatibility & Compliance

The CM174 is designed for use on energized conductors within standard industrial power distribution systems—including copper/aluminum busbars, THHN/THWN cables, molded-case circuit breakers, motor control centers, and switchgear bus ducts. It supports measurements on single-phase and three-phase AC systems up to 600 V nominal. Its non-contact thermal guidance eliminates the need for direct conductor access during preliminary survey, reducing arc-flash exposure risk. The instrument complies with IEEE 1584–2018 incident energy calculation protocols when used as part of a documented arc-flash hazard assessment workflow. All firmware and calibration traceability align with ISO/IEC 17025 requirements through FLIR’s A2LA-accredited calibration laboratory.

Software & Data Management

Measurements can be exported via Bluetooth 4.2 to the free FLIR Tools Mobile app (iOS/Android) for annotation, report generation (PDF/CSV), and thermal image–electrical data correlation. The app supports custom template creation for standardized inspection checklists aligned with NETA ATS-2021 or NFPA 70B preventive maintenance schedules. Audit trails include operator ID, GPS location (optional), timestamp, and thermal image metadata—supporting GLP-compliant documentation where required. Firmware updates are delivered over-the-air and maintain full backward compatibility with historical measurement files.

Applications

• Preventive & predictive maintenance of electrical infrastructure in data centers, manufacturing plants, and HVAC substations.
• Rapid fault isolation during commissioning of variable-frequency drives (VFDs), UPS systems, and renewable energy inverters.
• Thermal-electrical correlation for infrared thermography Level I/II certified personnel seeking quantitative validation of thermal findings.
• Energy auditing workflows requiring simultaneous load profiling and hotspot verification across multiple panels.
• Training and competency assessment for electrical apprentices using guided measurement workflows to reinforce diagnostic discipline.

FAQ

What does IGM™ stand for, and how does it differ from standard thermal imaging?
IGM™ (Infrared Guided Measurement) is FLIR’s patented methodology that fuses real-time thermal imagery with live electrical measurement targeting—enabling users to visually locate thermal anomalies first, then instantly measure the associated current/voltage at the exact point of interest.
Can the CM174 measure temperature directly on conductors?
Yes—the integrated Lepton® sensor provides spot temperature measurements (−10 °C to +250 °C) with ±3 °C or ±3% accuracy, calibrated for emissivity-adjusted readings on common electrical materials (e.g., oxidized copper, painted steel).
Is the CM174 compatible with third-party data logging platforms?
It supports BLE-based data streaming to FLIR Tools Mobile only; no native API or SDK is provided for integration with SCADA or CMMS systems.
Does the device meet requirements for arc-flash boundary assessments?
While not an arc-flash PPE rating tool itself, the CM174 enables safe, remote preliminary scanning per NFPA 70E Table 130.7(C)(15)(a), supporting establishment of limited-approach boundaries before hands-on testing.
How is calibration maintained across thermal and electrical measurement channels?
FLIR performs synchronized dual-channel calibration at factory and accredited service centers; certificate includes uncertainty budgets for both thermal (k=2) and electrical (k=2) parameters per ISO/IEC 17025.